Adjustable socket-wrench



U. G. ARGETSINGER.

ADJUSTABLE SOCKET WRENCH.

APPLICATION FILED MAR. 15, 1920.

Patented Nov. 9, 1920.

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ADJUSTABLE SOCKET WRENCH.

APPLICATION man MAR. 15, 1920.

. 1,357,935. Patented Nov. 9, 1920.

HEET 2- ULYSSES G. ARGETSiNGER, OF MAPLETON, MINNESOTA;

ADJUSTABLE SGCKET-WRENCH.

Specifieation of Letters Patent.

Application filed March 15, 1920. Serial No. 365,889.

, SINGER, a citizen of the United States, re-

siding at Mapleton, in the county of Blue Earth and State of Minnesota, have invented certain new and useful Improvements in Adjustable SocketWVrenches; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it a )pertains to make and use the same.

y invention relates to an improved adjustable socket wrench, which is especially adapted for use by automobile repair men.

It is necessary whentightening up the nuts which hold the parts of the machine together, for the mechanic or other person carrying out such work, to use a number of various sizes of socket wrenches for fitting the nuts and bolts which are of various sizes. These'wrenches are oftentimes misplaced and lost, consequently, it is necessary to purchase new ones to replace them, which is of course an unnecessary expense. Then again a great deal of time is lost in selecting the proper wrench to fit certain nuts or bolt-heads. As a whole, the above custom is exceedingly expensive and is inconvenient tothe mechanic or other person doing such work.

It is therefore my intention and the object of this invention to overcome the above mentioned objectionable custom by providing an adjustable socket wrench which will take the place of the endless members of socket wrenches now'i'n use. My wrench has a range of adjustment that will enable it to be fitted on nuts of many sizes, within a reasonable limit. In fact, the range of adjustment is such that it will fit practically all sizes of nuts employed 011 automobiles at the present time which vary slightly in size from each other. I am aware that adjustable socket wrenches are not broadly new, and I do not claim my device broadly, but as it is of new construction and has an exceedingly fine adjustment, I believe it is more advantageous and novel than many similar wrenches in use at the present time.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are em lo ed to .desi nat like parts throughout iihe same: g 6

Figure 1 is an elevation of a wrench constructed in accordance with my invention. t 1g. 2 is a sectional view partly in elevaion.

Fig. 3 is a View taken on the line 33 of Fig.1, looklng 1n the direction of the arrows. 7

Fig. 4 is a section, taken on the plane of the line 4l-4 of Fig. 1.

F 5 is a side elevation.

Fig. 6 1s a vertical sectional view, partly in elevation, taken on the line 66 of Fig. 2.

Fig. is a view taken on the line 7-7 of Fig. l.

Fig. 8 is a detail of the pawls. v

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 1 designates, as a whole, a T-shaped body memher, which includes a head 2 and a stem A pair of jaws 4: are pivoted between their ends to the head 2, and the portionsfi thereof extend in a direction toward the stem 8. This stem Sincludes a flat-faced portion 6 and a cylindrical shouldered portion 7, on which a disk 8 is rotatably mounted. One of the faces of the disk'8 is provided with cam slots 9, into which the extremities of the portions 5 of. the jaws are extended, and by means of which the opposite ends thereof are moved toward and from each other to fit nuts of various sizes. To prevent rotation of the disk 8 I employ perspective view of one Patented Nov. 9, 1920 ratchet mechanism which includes a disk 10,

the periphery of which is provided with a plurality of teeth, the same bearing against the opposite face of the disk 8, and being retained in position by thehub 11. Inasmuch as the hub 11 and disk 10 are carried by the flat faced portion 6 of the stem 3, it will be seen that they will becaused to rotate when the'stem. is rotated. ,The ratchet'mechanism further includes a pair of pawls 12 which are pivotally mounted upon the disk 8 at points opposite each other. Examination of these pawls, one of which is shown in Fig. 8, will disclose the fact that each of the pawls is provided with a portion 13 for engagement with the teeth of the disk 10, and is further provided with a lateral'finger piece i and lock'the 1 action of the j let by means of which it is actuated. ,To permit the pawlsto be operated freely by means of the finger-pieces 14:, I provide the disk 8 with notches 15 in which the fingerpieces 14 are disposed. lit is to benoted that the pawls 12 are so arranged that only one of them is operative at a time. in other words, when the part 13 of one of the pawls is between the teeth of the disk 10, the like part on the opposite pawl will be resting on one oiithe teeth and will be inefiect'ive. This construction enables me to obtain a very fine adjustment and causes the pawls .to be alternately active. In order to retain the pawls in engagement with the ratchet disk 10, I provide springs 17, the action of which is to force the effective end of the wall into engagement with the ratchet disk.

When it is desired to move the jaws't toward or from each other, this may be accomplished by rotation of the disk 8 which is normally locked, but which is permitted to rotate when the finger-pieces i i are moved into'the notches 15, which operation disengages the pawls from the ratchetdisk. Such aws is caused by the cam grooves 9 which diverge spirally fron the center of the disk 8 in one direction. it is obvious that rotation of the disk in one direction will move the jaws toward one another, while rotation in the oppositedirection. moves Only a slight rotation is necessary to obtain adjustment of the jaws, and no matter how slight the rotation is, either one or the other oi" the pawls 12 will move to position aws against further move ment. Particular emphasis is to be laid on the arrangement of these pawls, that is, the

alternate engagement of the pawls with the ratchet disk, because this enables me to chengage tain a very fine adjustment of the jaws which is necessary in a great many instances.

A wrenchconstructed in accordance with my invention will be found extremely advantageous and useful, in that it will do away with the usual custom of employing a lurality of socket wrenches. No matter how slight the nuts vary in size, the jaws of my wrench maybe adjusted to effectively them. The construction of the wrench is such that an ordinary brace may Q for use with a hexagonal nut, I desire it-to be used in connection with it'to actuate the same.

While have shown the nut engaging ends of the aws of my wrench as being adapted be understood that it may also be designed for use in connection with square nuts or nuts of any other design as may be necessary.

them away from each other.

ing a T shaped body member, a pair of jaws pivoted, one on each end of the head of the T, the jaws including portions which extenl 'n the direction of the stem or the T, said stem including a flat faced portion and a cylindrical portion, the last named portion forming a journal, a disk rotatably mounted on the journal, the outer face ofthe disk being provided with cam slots with' which the portions of: the jaws adjacent the stem of the T'coact, a ratchet disk carried by the stem and bearing on the inner face of the rotatable'disk, and a pawl carried by the last named part, cooperating with the ratchet disk to prevent relative rotation of the first named disk and jaws. I

An adjustable socket (wrench comprising a body member including lateral arms, jaws pivoted on the arms, a rotary member on the body, coasting means between the retary member and jaws r01- moving the latter toward and from each other, ratchet mechanism for preventing rotation of said rotary member, said mechanism including a disk having its periphery provided with teeth, and a pair of pawls mounted on said rotary member, being so arranged that they are alternately engageable with the disk to obtain an extremely fine adjustment of the jaw members.

3. An adjustable socket wrench comprising a Tshaped body member, a pair of jaws pivoted, one at each end of the head of the and a spring coasting with each pawl to move. it to operative position.

In testimony whereof I have hereunto set ,7

my hand.

ULYSSES e. ARGETSINGEB. 

